A203586 - OEIS

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A203586 as a simple table

n	a(n)
1	13
2	500
3	40426
4	5709600
5	1256804900
6	399383584000
7	173474742285000
8	98872482630272000
9	71645799536067250000
10	64368175738481971200000
11	70249051303937073666500000
12	91567621291850074309120000000

[13,500,40426,5709600,1256804900,399383584000, 173474742285000,98872482630272000, 71645799536067250000,64368175738481971200000, 70249051303937073666500000, 91567621291850074309120000000]